cal_DeepPercolation {simET}

Calculating Deep percolation

Description

Calculating Deep percolation

Usage

cal_DeepPercolation(Wa, Wfc, a, b, t)

Arguments

Wa

actual soil water storage in the root zone (mm)

Wfc

soil water storage to maximum root depth (Zr ) at field capacity (mm)

a

A water storage value comprised between WFc and Wa at saturation.

b

b<-0.0173 for soils draining quickly.Otherwise b>-0.0173.

t

time after an irrigation or rain that produced a storage above field capacity (days)

Value

A vector for deep percolation(mm/day).

References

Liu Y, Pereira L S, Fernando R M. Fluxes through the bottom boundary of the root zone in silty soils: Parametric approaches to estimate groundwater contribution and percolation[J]. Agricultural Water Management, 2006, 84(1):27-40.